进口周向总压畸变与静子尾迹对叶顶间隙流的影响  

Effect of Inlet Circumferential Total Pressure Distortion and Stator Wake on Tip Clearance Flow

作　　者：史亚锋[1] 吴虎[1] 徐倩楠[1] 

机构地区：[1]西北工业大学动力与能源学院,陕西西安710072

出　　处：《燃气涡轮试验与研究》2013年第3期17-20,58,共5页Gas Turbine Experiment and Research

摘　　要：对进口周向总压畸变条件下的某跨声速压气机静子-转子级,采用多畸变区方案进行非定常数值模拟。结果表明:①畸变区下游转子叶顶区域的气流流通能力较非畸变区有明显恶化,这是因为转子在扫出畸变区时,叶片负荷增加,叶片前缘静压差加大,同时畸变造成下游气流轴向速度明显减小;②静子尾迹对叶顶区域的流动有一定改善,原因为静子尾迹会在下游转子叶盆前缘积聚,能减弱叶顶区域的二次泄漏。The unsteady flow field of stator-rotor stage under inlet circumferential total pressure distortion has been numerically simulated by multiple distortion domain method. The computation results show that the inlet total pressure distortion can increase the load, enlarge blade tip leading edge static pressure differ?ence and slow the flow axial velocity, which causes the tip blockage. The blade tip clearance flow can bene?fit from the stator wake because the stator wake accumulates on the downstream rotor blade pressure side which can effectively suppress the double-leakage flow.

关 键 词：跨声速压气机 进口周向总压畸变 叶顶泄漏流 非定常流动 静子尾迹 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]